Emerson M21, M22 user manual Cont’d Zero calibration option

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4.2.2(Cont’d) Zero calibration option

The “Zero” calibration option is selected if the sensor is only being zeroed (this not a complete calibration)

It does not require the application of span gas, as only the sensor’s zero point is adjusted. Ensure that no contaminants are present, if the surrounding air is to be used for Zeroing. If Zero calibration is needed, at step 7 above, select ‘Zero’ using switch 3).

Warning Air movement, drafts and wind can cause dilution of calibration gas flow which can cause an erroneous calibration and inaccurate performance. To avoid this, use a Calibration Cup attached to the bottom of the sensor. The cup doesn’t have to be removed for normal operation. When the cup is in place, inject calibration gas at a rate of 0.5 – 1.0 liter per minute.

MAN-0076 Rev 05 Millennium II December 07, 2012

Net Safety Monitoring Inc

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Contents Millennium Important Information Table of Contents Monitoring and Outputs Special conditions of use IntroductionTransmitter Enclosure Dimensional Drawing Enclosure DimensionsUnpack InstallationMounting Transmitter Orientation OptionTransmitter electronics module and Relay options Board assembly diagramRotating Electronics module Field Installation Wiring and installationGuidelines SealsCable choice and guidelines Important Wiring GuidelinesArmored Cable preparation procedure Connecting wires Separation Jumpers positions Remotely mounted sensors jumper configurationSensor Terminals Sensor and Transmitter terminalsSensor Separation/ Remote mounting of sensor Remote ResetNon-isolated terminal connection Wiring drawingsIsolated terminal connection Installation Checklist Transmitter and faceplate description Transmitter Power UpDisplay Intrusive Access Menu buttons and accessNon-Intrusive Access/Magnetic Reed switch Access Status LEDMenu options OperationNavigating main menu Menu structure flow chart Full calibration Normal calibration procedure Cont’d Zero calibration option Full Calibration Viewing and setting alarm levels points Enable / Disable channelsRelay Assignment Setting Relay optionsAlarm Relay 1 RL1 Alarm Relay 2 RL2 Alarm Relay 3 RL3 Modbus Setup Relay Alarm Mode setting for Oxygen sensors onlySelect Display Language Setup Current Time Setup Current DateEvent Types Display on Screen Events Format /host View Event LogSelf Test Relay Manual ResetSensor Upper Limit Range Calibration gas value Select Gas TypeSerial Number & Firmware Version Monitoring and outputs 1Fault monitoringRelays Analog 4-20mAReg Current Output Status LED Meaning Value Red Green Reg. Value Current Output Status LED Meaning Red Green RS-485 Modbus RTUReg# Meaning Readable Writeable Bit Meaning Hart CommunicationMaintaining TroubleshootingPeriodic response check Storage Spare Parts /AccessoriesHow to Return Equipment Appendix Appendix B Resistance Appendix C Millennium II Transmitter Specifications Approvals December 07 Net Safety Monitoring Inc

M22, M21 specifications

The Emerson M21 and M22 are advanced industrial controllers designed to enhance process automation and operational efficiency in various industries. Emerson, a leader in automation technology, introduced these models to meet the growing demands for precision, reliability, and connectivity in today’s fast-paced industrial environments.

One of the standout features of the M21 and M22 controllers is their robust processing power. They are equipped with high-speed processors that enable rapid data processing and real-time decision-making. This capability allows users to respond promptly to changing process conditions, ensuring optimal performance and minimizing downtime.

The M21 and M22 offer versatile connectivity options, supporting various communication protocols such as Ethernet, Modbus, and TCP/IP. This extensive connectivity facilitates seamless integration into existing systems, allowing for easy collaboration between devices across different platforms. Users can monitor and control processes from virtually anywhere, providing flexibility and convenience.

Scalability is another essential characteristic of the M21 and M22. These controllers can easily adapt to growing operational demands, enabling businesses to expand their automation solutions without the need for complete overhauls. Whether you're running a small system or a large, complex operation, these controllers can scale to meet your needs.

Furthermore, Emerson has incorporated advanced diagnostic and predictive maintenance features into the M21 and M22 models. These technologies leverage data analytics to predict potential failures before they occur, allowing users to take proactive measures. This not only minimizes unexpected downtime but also extends the lifespan of equipment, contributing to overall cost savings.

In terms of user interface, the M21 and M22 come with intuitive software that provides easy navigation and configuration. The interface is designed to be user-friendly, reducing the learning curve for new operators and allowing for efficient setup and management of processes.

Finally, both controllers are built with a focus on reliability and durability, making them suitable for various industrial environments, including harsh or demanding settings. Their robust design ensures consistent performance, even in challenging conditions.

In summary, the Emerson M21 and M22 controllers represent cutting-edge solutions in industrial automation, offering high processing power, flexible connectivity, scalability, advanced maintenance features, user-friendly interfaces, and robust design. Companies looking to enhance their automation capabilities will find these controllers to be valuable assets in achieving operational excellence.